Out of 28 students,12 HV at least one brother.and 13 HV at least one sister.eight student have both sisters and brother s.how many students do not have either a brother or a sister.
Well, it sounds like this class is quite the diverse group! If we break down the information, we know that there are 28 students in total, and 12 of them have at least one brother, and 13 have at least one sister. Now, here's where it gets interesting: eight students are lucky enough to have both sisters and brothers.
To figure out how many students don't have either a brother or a sister, we can try a fun trick. We'll first add the number of students with a brother to the number with a sister, which gives us a total of 12 + 13 = 25 students.
However, we have to subtract those 8 fortunate students who have both a brother and a sister, as we don't want to count them twice. So, we subtract 8 from our total, leaving us with 25 - 8 = 17 students.
Therefore, out of the 28 students, 17 of them do not have either a brother or a sister. Looks like they're the lucky ones when it comes to not having to share their toys or deal with sibling arguments!
To find the number of students who do not have either a brother or a sister, we need to subtract the number of students who have at least one brother or at least one sister from the total number of students.
Given:
Number of students = 28
Number of students with at least one brother (B) = 12
Number of students with at least one sister (S) = 13
Number of students with both sisters and brothers (B&S) = 8
Let's break it down step by step:
1. Find the number of students with at least one sibling:
Number of students with at least one sibling = Number of students with at least one brother + Number of students with at least one sister - Number of students with both sisters and brothers
Number of students with at least one sibling = 12 + 13 - 8
Number of students with at least one sibling = 25
2. Find the number of students who do not have either a brother or a sister:
Number of students without a brother or sister = Total number of students - Number of students with at least one sibling
Number of students without a brother or sister = 28 - 25
Number of students without a brother or sister = 3
Therefore, there are 3 students who do not have either a brother or a sister.
To find the number of students who do not have either a brother or a sister, we need to subtract the number of students who have at least one brother or at least one sister from the total number of students.
Given:
Total number of students = 28
Number of students with at least one brother = 12
Number of students with at least one sister = 13
Number of students with both sisters and brothers = 8
To find the number of students who have at least one brother or at least one sister, we need to add the number of students with at least one brother and the number of students with at least one sister, and then subtract the number of students with both sisters and brothers.
Number of students with at least one brother or at least one sister = (Number of students with at least one brother) + (Number of students with at least one sister) - (Number of students with both sisters and brothers)
Number of students with at least one brother or at least one sister = 12 + 13 - 8
Number of students with at least one brother or at least one sister = 17
To find the number of students who do not have either a brother or a sister, we subtract the number of students with at least one brother or at least one sister from the total number of students.
Number of students without either a brother or a sister = Total number of students - Number of students with at least one brother or at least one sister
Number of students without either a brother or a sister = 28 - 17
Number of students without either a brother or a sister = 11
Therefore, there are 11 students who do not have either a brother or a sister.